The prose and format are pretty good, and were appreciated. Sadly I did not only find the overdose of aliens & superpowers to lower the value aka quality of it, but got a bit bored by the lengthy intro.

For some reason I got the intuitive hint at 'Jack the Ripper' early on, and I had the feeling I had read this story before.

Invincible killers who get away with everything, just like invincible vigilantes who are never really endangered, can reduce the thrill of a story.

To me this is a 3 star story at the very best, but it being the first I read on this website I assign 4 stars.